The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 28, 2011
Filed:
Sep. 25, 2007
Bogdan Georgescu, Plainsboro, NJ (US);
Peter Durlak, Erlangen, DE;
Vassilis Athitsos, Arlington, TX (US);
Adrian Barbu, Tallahassee, FL (US);
Dorin Comaniciu, Princeton Junction, NJ (US);
Bogdan Georgescu, Plainsboro, NJ (US);
Peter Durlak, Erlangen, DE;
Vassilis Athitsos, Arlington, TX (US);
Adrian Barbu, Tallahassee, FL (US);
Dorin Comaniciu, Princeton Junction, NJ (US);
Siemens Medical Solutions USA, Inc., Malvern, PA (US);
Abstract
A method for downsampling fluoroscopic images and enhancing guidewire visibility during coronary angioplasty includes providing a first digitized image, filtering the image with one or more steerable filters of different angular orientations, assigning a weight W and orientation O for each pixel based on the filter response for each pixel, wherein each pixel weight is assigned to a function of a maximum filter response magnitude and the pixel orientation is calculated from the angle producing the maximum filter response if the magnitude is greater than zero, wherein guidewire pixels have a higher weight than non-guidewire pixels, and downsampling the orientation and weights to calculate a second image of half the resolution of the first image, wherein the downsampling accounts for the orientation and higher weight assigned to the guidewire pixels.